"Christian tradition and Scripture speak with one voice on this subject wherever it's been raised," Sessions said. "It does not accept same-sex unions."

Obama is not unique in trying to interpret the Bible to fit with his world view, he said.

"Some people want to change that these days - but for 2000 years and plain reading of the Scripture, I think that has not been the position of the church" on same-sex unions, Sessions said. Obama "is talking about changing, a redefining of a Christian tradition."Cybercast News Servicereported earlier this week that Obama told a college crowd while campaigning in Ohio on Sunday that his support for legalizing same-sex unions is rooted in his Christian faith.

"I don't think it [a same-sex union] should be called marriage, but I think that it is a legal right that they should have that is recognized by the state," Obama said. "If people find that controversial, then I would just refer them to the Sermon on the Mount, which I think is, in my mind, for my faith, more central than an obscure passage in Romans."